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Updated: Apr 17, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Optical stark effects in j-aggregate-metal hybrid nanostructures exhibiting a strong
P Vasa1, W Wang2, R Pomraenke2
1Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany and Department of Physics, Indian Institute of Technology Bombay, 400076 Mumbai, India.
Abstract:
We report on the observation of optical Stark effects in J-aggregate-metal hybrid nanostructures exhibiting strong exciton-surface-plasmon-polariton coupling. For redshifted nonresonant excitation, pump-probe spectra show short-lived dispersive line shapes of the exciton-surface-plasmon-polariton coupled modes caused by a pump-induced Stark shift of the polariton resonances. For larger coupling strengths, the sign of the Stark shift is reversed by a transient reduction in normal mode splitting. Our studies demonstrate an approach to coherently control and largely enhance optical Stark effects in strongly coupled hybrid systems. This may be useful for applications in ultrafast all-optical switching.
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